| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| /** |
| * @fileoverview Constants used throughout ChromeVox. |
| */ |
| |
| goog.provide('constants'); |
| |
| /** |
| * Possible directions to perform tree traversals. |
| * @enum {string} |
| */ |
| constants.Dir = { |
| /** Search from left to right. */ |
| FORWARD: 'forward', |
| |
| /** Search from right to left. */ |
| BACKWARD: 'backward', |
| }; |
| |
| /** |
| * Represents a point. |
| * @typedef {{x: (number), y: (number)}} |
| */ |
| constants.Point; |
| |
| /** |
| * If a node contains more characters than this, it should not be visited during |
| * object navigation. |
| * |
| * This number was taken from group_util.js and is an approximate average of |
| * paragraph length. It's purpose is to prevent overloading tts. |
| * @type {number} |
| * @const |
| */ |
| constants.OBJECT_MAX_CHARCOUNT = 1500; |
| |
| /** |
| * Identifier for the system voice. |
| * @type {string} |
| * @const |
| */ |
| constants.SYSTEM_VOICE = 'chromeos_system_voice'; |
| |
| /** |
| * Color for the ChromeVox focus ring. |
| * @type {string} |
| * @const |
| */ |
| constants.FOCUS_COLOR = '#F7983A'; |
| |
| /** |
| * Interaction medium for the tutorial. |
| * Note: keep in sync with the enum in |
| * c/b/r/c/accessibility/common/tutorial/constants.js. |
| * TODO: Unify with the above file when ES6 is standard in ChromeVox. |
| * @enum {string} |
| */ |
| constants.InteractionMedium = { |
| NONE: 'none', |
| KEYBOARD: 'keyboard', |
| TOUCH: 'touch', |
| BRAILLE: 'braille', |
| }; |
